MB: Copy MB from Chromium repo

setup_links.py

 #!/usr/bin/env python
 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 """Setup links to a Chromium checkout for WebRTC.
@@ skipping 54 matching lines @@
   'third_party/zlib',
   'third_party/WebKit',  # TODO(kjellander): Remove, see webrtc:5629.
   'tools/clang',
   'tools/determinism',
   'tools/generate_library_loader',
   'tools/generate_stubs',
   'tools/gn',
   'tools/grit',
   'tools/gyp',
   'tools/luci-go',
-  'tools/mb',
   'tools/memory',
   'tools/protoc_wrapper',
   'tools/python',
   'tools/swarming_client',
   'tools/valgrind',
   'tools/vim',
   'tools/win',
   'tools/xdisplaycheck',
 ]
 
@@ skipping 436 matching lines @@
   except LinkError as e:
     print >> sys.stderr, e.message
     return 3
   finally:
     links_database.close()
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())